Scarborough Formation : stratotype 38645The type section at Hundale Point [TA 026 948] was described by Bate (1965, p.83) and later by Parsons (1977) and Gowland and Riding (1991). Here, grey mudstone with plant fragments of the Cloughton Formation are overlain by calcareous siltstone, calcareous mudstone, calcareous fine- to medium-grained sandstone and thin beds of argillaceous limestone; calcite concretions are present in the uppermost calcareous siltstones. Sandstones and siltstones have a rich and diverse trace fossil assemblage, including Diplocraterion, Rhizocorallium, Thalassinoides and Chondrites burrows. Bivalves and sparse ammonites (Humphriesianum and Subfurcatum Zones - early to late Bajocian) are present. Seven members have been recognised at Hundale Point (Parsons, 1977; Gowland and Riding, 1991) but these are not readily traceable away from the coastal cliff exposures. The members at Hundale Point comprise, in upward sequence, the Helwath Beck Member, the Hundale Shale Member, the Hundale Sandstone Member, the Spindle Thorn Limestone Member, the Ravenscar Shale Member, the White Nab Ironstone Member and the Bogmire Gill Member.502600.0,494800.0 502700.0,494800.0 502700.0,494900.0 502600.0,494900.0 502600.0,494800.0502600.0,494800.0 502700.0,494800.0 502700.0,494900.0 502600.0,494900.0 502600.0,494800.0502600.0,494800.0 502600.0,494900.0 502700.0,494900.0 502700.0,494800.0 502600.0,494800.0502650.00,494850.00